Which confidence interval is wider? O a. (x, y) O b. (M. N n 250 650 90% Confidence Interval (M, N) (X, Y)
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- CH7: Dr. Helen obtains a random sample of n = 14 scores from a population with o = 8. If the sample mean is 46 points smaller than the population mean, what is the z-score for the sample mean? Oa. 227.69 b. -227.69 Oc. 21.51 O d.l-21.51|| e. none of the optionsboth subparts please 1 and 2 thank you!!Use technology to construct the confidence intervals for the population variance o² and the population standard deviation σ. Assume the sample is taken from a normally distributed population. c=0.90, s² = 21.16, n = 29 The confidence interval for the population variance is ( ☐, ☐ ). (Round to two decimal places as needed.)
- Construct the confidence interval for the population mean u. c= 0.95, x= 6.1, o = 0.6, and n = 40 A 95% confidence interval for u is ( D. (Round to two decimal places as needed.)Could you please solve this question?Employing the two-sample independent t test, with N1 = 11 and N2 = 11, find the degrees of freedom. Group of answer choices df = 20 df = 11 df = 19 df = 23 df = 21
- Construct the confidence interval for the population mean u. c = 0.90, x = 5.3, o = 0.8, and n= 54 A 90% confidence interval for u is ( D. (Round to two decimal places as needed.) Enter your answer in the edit fields and then click Check Answer. All parts showing Type here to search7. A gambler pays $10 to enter a game in which two coins are tossed. The gambler receives $25, $5 or nothing if two heads, one head or no heads appear, respectively. (a) Determine the expected return per game (ignore the $10 cost of playing). (b) The gambler decides to play until winning the $25 prize. Letting X denote the number of games played until two heads appear (the final game is the Xth game), find the probability function f(x) of X, show that its sum over all possible values of X is one, and find the expected value µ of X. (Note: this is not the expected return on this version of the game. Note too that X here is not quite the same as a geometric random variable, as it was defined in the lecture notes; however, thinking about such random variables will be helpful here).Which interval is which? Alessandro constructed three confidence intervals, all from the same random sample. The confidence levels are 90%, 95%. and 99%. The confidence intervals are I. 4.5<µ<5.5 II. 4.3 <µ<5.7 III. 4.6<µ<5.4 Unfortunately, Alessandro has forgotten which confidence interval has which level. Match each confidence interval with its level. 4.5SEE MORE QUESTIONS
